The cardiovascular system responds to exercise with an increase in heart rate and the strength of each heart contraction, resulting in higher cardiac output and blood pressure. During exercise, the heart adapts by pumping more blood with each beat at a faster rate to meet the increased metabolic needs of active skeletal muscles. This document discusses how mean arterial pressure, cardiac output, and total peripheral resistance are related and impacted by exercise through measurements of systolic, diastolic, and mean arterial blood pressures taken before and after physical activity.
Control of blood pressure & the benefit of exerciseShazia Akram
Biology iGCSE, A level
Cambridge/edexel curriculum
Concise notes to understand how exercise has an affect on blood pressure. Includes brief mention about heart disease and treatment with stenting/CABG. Includes brief discussion about lifestyle factors.
Available in PDF and PPT versions.
Can i take this opportunity to thank everyone from whom iv
Hey, these are the slides me n my friends made... Use them if u want to... for viewing the videos used click on the links given ahead.
http://www.youtube.com/watch?v=jzOti_MtmBk
http://www.youtube.com/watch?v=N9MARqmqSf4
http://www.youtube.com/watch?v=yokcKhqq48c
http://www.youtube.com/watch?v=rJZVFRJmc9M
Control of blood pressure & the benefit of exerciseShazia Akram
Biology iGCSE, A level
Cambridge/edexel curriculum
Concise notes to understand how exercise has an affect on blood pressure. Includes brief mention about heart disease and treatment with stenting/CABG. Includes brief discussion about lifestyle factors.
Available in PDF and PPT versions.
Can i take this opportunity to thank everyone from whom iv
Hey, these are the slides me n my friends made... Use them if u want to... for viewing the videos used click on the links given ahead.
http://www.youtube.com/watch?v=jzOti_MtmBk
http://www.youtube.com/watch?v=N9MARqmqSf4
http://www.youtube.com/watch?v=yokcKhqq48c
http://www.youtube.com/watch?v=rJZVFRJmc9M
General cardiovascular system
• Diagnostic tests p. 621
o ECG
o Stress ECG
o CXR
o Echo
o Cardiac cath
o Angiography
o Doppler studies
o Pulse oximetry
• Haematological studies p. 623
o Serum electrolytes
o Blood gases
o Serum enzymes
o Serum lipids
• Classification of cardiac disorders p. 629
• Risk factors p. 629
Congenital heart defects p. 630
• Description of congenital defects
o ASD
o VSD
o PDA
o Tetralogy of Fallot
• Clinical manifestations of congenital defects
• Management
Disorders associated with the conducting system p 633
• Specific dysrhythmias of the atria p. 634
o PAC
o Atrial flutter
o Atrial Fibrillation
• Ventricular dysrhythmias p 637
o Ventricular tachycardia
o Ventricular fibrillation
o Ventricular asystole
• Management
Congestive cardiac failure p. 644, PCCM 81
• Aetiology
• Pathophysiology
• Classification of CCF
o Systolic HF
o Right sided
o Left sided
• Clinical manifestations
o Respiratory
o GIT
o Oedema
o Renal
o Neurological
o Other
o Physical examination
o Summary table 33.6
• Diagnostic test results
• Management
o See N/care plan p 624
o PCCM p 84
Bed rest
Stress relief
Diet
Exercise
Smoking / alcohol
Refer
Medication
• Nursing management
Cardiac trauma p 647, p 216, table 33.7
• Stabbed heart PCCM 272
Management of coronary artery disease
• Risk factors p 651
• Pathophysiology p 651
• Nursing assessment p 652
o Subjective/ Objective
• Diagnostic test results p 653 (not SGOT)
Angina p 653 PCCM p 91 (T&E Periods)
• Stable
• Unstable
• Clinical features pain PCCM 91
• Management P 653 PCCM 91
Myocardial infarct p 653 PCCM p 92 (T&E Periods)
• Clinical manifestations p 654 PCCM 92
• Clinical features pain PCCM 92
• Management
o Medical
o PTCA /CABG
o Nursing
Diagnoses
Outcomes
Interventions
• Complications
o Cardiogenic shock
o Cardiac failure
o Deep vein thrombosis
o Pulmonary embolism
• Essential health information
CVS in exercise - SPORTS PHYSIOLOGY
Cardiovascular system and the influence of exercises on it The effects of exercise on cardiovascular system can be determined it by :-
1. The effect on heart size,
2. The effect on plasma volume ,
3. The effect on stroke volume,
4. The effect on heart rate ,
5. The effect on cardiac output ,
6. The effect on oxygen extraction ,
7. The effect on blood flow and distribution
8. The effect on blood pressure
General cardiovascular system
• Diagnostic tests p. 621
o ECG
o Stress ECG
o CXR
o Echo
o Cardiac cath
o Angiography
o Doppler studies
o Pulse oximetry
• Haematological studies p. 623
o Serum electrolytes
o Blood gases
o Serum enzymes
o Serum lipids
• Classification of cardiac disorders p. 629
• Risk factors p. 629
Congenital heart defects p. 630
• Description of congenital defects
o ASD
o VSD
o PDA
o Tetralogy of Fallot
• Clinical manifestations of congenital defects
• Management
Disorders associated with the conducting system p 633
• Specific dysrhythmias of the atria p. 634
o PAC
o Atrial flutter
o Atrial Fibrillation
• Ventricular dysrhythmias p 637
o Ventricular tachycardia
o Ventricular fibrillation
o Ventricular asystole
• Management
Congestive cardiac failure p. 644, PCCM 81
• Aetiology
• Pathophysiology
• Classification of CCF
o Systolic HF
o Right sided
o Left sided
• Clinical manifestations
o Respiratory
o GIT
o Oedema
o Renal
o Neurological
o Other
o Physical examination
o Summary table 33.6
• Diagnostic test results
• Management
o See N/care plan p 624
o PCCM p 84
Bed rest
Stress relief
Diet
Exercise
Smoking / alcohol
Refer
Medication
• Nursing management
Cardiac trauma p 647, p 216, table 33.7
• Stabbed heart PCCM 272
Management of coronary artery disease
• Risk factors p 651
• Pathophysiology p 651
• Nursing assessment p 652
o Subjective/ Objective
• Diagnostic test results p 653 (not SGOT)
Angina p 653 PCCM p 91 (T&E Periods)
• Stable
• Unstable
• Clinical features pain PCCM 91
• Management P 653 PCCM 91
Myocardial infarct p 653 PCCM p 92 (T&E Periods)
• Clinical manifestations p 654 PCCM 92
• Clinical features pain PCCM 92
• Management
o Medical
o PTCA /CABG
o Nursing
Diagnoses
Outcomes
Interventions
• Complications
o Cardiogenic shock
o Cardiac failure
o Deep vein thrombosis
o Pulmonary embolism
• Essential health information
CVS in exercise - SPORTS PHYSIOLOGY
Cardiovascular system and the influence of exercises on it The effects of exercise on cardiovascular system can be determined it by :-
1. The effect on heart size,
2. The effect on plasma volume ,
3. The effect on stroke volume,
4. The effect on heart rate ,
5. The effect on cardiac output ,
6. The effect on oxygen extraction ,
7. The effect on blood flow and distribution
8. The effect on blood pressure
20.2 Blood Flow, Blood Pressure, and Resistance Get This Book!.docxfelicidaddinwoodie
20.2 Blood Flow, Blood Pressure, and Resistance
Get This Book!
Page by: OpenStax
Summary
By the end of this section, you will be able to:
· Distinguish between systolic pressure, diastolic pressure, pulse pressure, and mean arterial pressure
· Describe the clinical measurement of pulse and blood pressure
· Identify and discuss five variables affecting arterial blood flow and blood pressure
· Discuss several factors affecting blood flow in the venous system
Blood flow refers to the movement of blood through a vessel, tissue, or organ, and is usually expressed in terms of volume of blood per unit of time. It is initiated by the contraction of the ventricles of the heart. Ventricular contraction ejects blood into the major arteries, resulting in flow from regions of higher pressure to regions of lower pressure, as blood encounters smaller arteries and arterioles, then capillaries, then the venules and veins of the venous system. This section discusses a number of critical variables that contribute to blood flow throughout the body. It also discusses the factors that impede or slow blood flow, a phenomenon known as resistance.
As noted earlier, hydrostatic pressure is the force exerted by a fluid due to gravitational pull, usually against the wall of the container in which it is located. One form of hydrostatic pressure is blood pressure, the force exerted by blood upon the walls of the blood vessels or the chambers of the heart. Blood pressure may be measured in capillaries and veins, as well as the vessels of the pulmonary circulation; however, the term blood pressure without any specific descriptors typically refers to systemic arterial blood pressure—that is, the pressure of blood flowing in the arteries of the systemic circulation. In clinical practice, this pressure is measured in mm Hg and is usually obtained using the brachial artery of the arm.
Components of Arterial Blood Pressure
Arterial blood pressure in the larger vessels consists of several distinct components (Figure): systolic and diastolic pressures, pulse pressure, and mean arterial pressure.
Systolic and Diastolic Pressures
When systemic arterial blood pressure is measured, it is recorded as a ratio of two numbers (e.g., 120/80 is a normal adult blood pressure), expressed as systolic pressure over diastolic pressure. The systolic pressure is the higher value (typically around 120 mm Hg) and reflects the arterial pressure resulting from the ejection of blood during ventricular contraction, or systole. The diastolic pressure is the lower value (usually about 80 mm Hg) and represents the arterial pressure of blood during ventricular relaxation, or diastole.
Systemic Blood Pressure
The graph shows the components of blood pressure throughout the blood vessels, including systolic, diastolic, mean arterial, and pulse pressures.
Pulse Pressure
As shown in Figure, the difference between the systolic pressure and the diastolic pressure is the pulse pressure. For example, an indivi ...
1. Heart Rate, Blood Pressure,
and Exercise
The adaptability of the heart can be observed during exercise, when the metabolic activity of
skeletal muscles increases. The cardiovascular system, consisting of the heart and blood vessels,
responds to exercise with an increase in heart rate and strength of contraction with each beat,
resulting in a higher cardiac output (cardiac output = quantity of blood pumped through the
heart per unit of time) and blood pressure. Positive pressure is created by forceful contraction of
the left ventricle of the heart, measured as systole. It is maintained during relaxation of the
ventricle by closure of the aortic valve and recoil of arteries, measured as diastole (see Figure 1).
Mean arterial pressure (MAP) is a useful measure of the adequacy of tissue perfusion, and is not
a simple average of systolic and diastolic blood pressures. This is because diastole continues for
twice as long as systole. MAP can be reasonably approximated using the equation:
The mean arterial pressure is directly proportional to cardiac output and inversely proportional to
total peripheral resistance, where:
Cardiac output is the amount of blood pumped out of the heart with each beat (called the stroke
volume), multiplied by the number of beats per minute.
Total peripheral resistance depends on blood viscosity, length of the arterial system, diameter
and elasticity of the blood vessels, and the pressure entering versus leaving the arterial system
(systolic pressure minus the pressure in the venous system).
Figure 1
In this experiment, you will observe how the heart responds to the increased metabolic demand
of muscles during exercise. You will compare heart rate and blood pressure readings taken before
and after exercise and measure changes in systolic, diastolic and mean arterial pressures. You